We study the Witten effect of hidden monopoles on the QCD axion dynamics, and show that its abundance as well as isocurvature perturbations can be significantly suppressed if there is a sufficient amount of hidden monopoles. When the hidden monopoles make up a significant fraction of dark matter, the Witten effect suppresses the abundance of axion with the decay constant smaller than $10^{12}$ GeV. The cosmological domain wall problem of the QCD axion can also be avoided, relaxing the upper bound on the decay constant when the Peccei-Quinn symmetry is spontaneously broken after inflation
If there are a plethora of axions in nature, they may have a complicated potential and create an axi...
We propose a simple mechanism to suppress axion isocurvature fluctuations using hidden sector magnet...
The axion is a hypothetical particle arising from the spontaneous breaking of a global Peccei-Quinn ...
We study the Witten effect of hidden monopoles on the QCD axion dynamics, and show that its abundanc...
We study the Witten effect of hidden monopoles on the QCD axion dynamics, and show that its abundanc...
AbstractWe study the Witten effect of hidden monopoles on the QCD axion dynamics, and show that its ...
We propose a scenario in which the spontaneous breakdown of the Peccei-Quinn symmetry leads to monop...
We study the cosmological evolution of the QCD axion coupled to hidden photons. For a moderately str...
We propose a model for the QCD axion which is realized through a coupling of the Peccei-Quinn scalar...
We study QCD axion or cosmological axion-like particles (ALPs) in a model inspired by the recent int...
The domain wall problem of the Peccei–Quinn mechanism can be solved if the Peccei–Quinn symmetry is ...
Axion scenarios in which the spontaneous breaking of the Peccei-Quinn symmetry takes place before or...
The QCD axion solving the strong CP problem may originate from antisymmetric tensor gauge fields in ...
The axion is a hypothetical particle arising from the spontaneous breaking of a global Peccei-Quinn ...
The QCD axion is a good dark matter candidate. The observed dark matter abundance can arise from mis...
If there are a plethora of axions in nature, they may have a complicated potential and create an axi...
We propose a simple mechanism to suppress axion isocurvature fluctuations using hidden sector magnet...
The axion is a hypothetical particle arising from the spontaneous breaking of a global Peccei-Quinn ...
We study the Witten effect of hidden monopoles on the QCD axion dynamics, and show that its abundanc...
We study the Witten effect of hidden monopoles on the QCD axion dynamics, and show that its abundanc...
AbstractWe study the Witten effect of hidden monopoles on the QCD axion dynamics, and show that its ...
We propose a scenario in which the spontaneous breakdown of the Peccei-Quinn symmetry leads to monop...
We study the cosmological evolution of the QCD axion coupled to hidden photons. For a moderately str...
We propose a model for the QCD axion which is realized through a coupling of the Peccei-Quinn scalar...
We study QCD axion or cosmological axion-like particles (ALPs) in a model inspired by the recent int...
The domain wall problem of the Peccei–Quinn mechanism can be solved if the Peccei–Quinn symmetry is ...
Axion scenarios in which the spontaneous breaking of the Peccei-Quinn symmetry takes place before or...
The QCD axion solving the strong CP problem may originate from antisymmetric tensor gauge fields in ...
The axion is a hypothetical particle arising from the spontaneous breaking of a global Peccei-Quinn ...
The QCD axion is a good dark matter candidate. The observed dark matter abundance can arise from mis...
If there are a plethora of axions in nature, they may have a complicated potential and create an axi...
We propose a simple mechanism to suppress axion isocurvature fluctuations using hidden sector magnet...
The axion is a hypothetical particle arising from the spontaneous breaking of a global Peccei-Quinn ...